1361819317 has 4 divisors (see below), whose sum is σ = 1363194496. Its totient is φ = 1360444140.

The previous prime is 1361819311. The next prime is 1361819339. The reversal of 1361819317 is 7139181631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7139181631 = 313 ⋅22808887.

It is a cyclic number.

It is not a de Polignac number, because 1361819317 - 2¹¹ = 1361817269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1361819317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361819311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686103 + ... + 688084.

It is an arithmetic number, because the mean of its divisors is an integer number (340798624).

Almost surely, 2^1361819317 is an apocalyptic number.

It is an amenable number.

1361819317 is a deficient number, since it is larger than the sum of its proper divisors (1375179).

1361819317 is an equidigital number, since it uses as much as digits as its factorization.

1361819317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375178.

The product of its digits is 27216, while the sum is 40.

The square root of 1361819317 is about 36902.8361647177. The cubic root of 1361819317 is about 1108.4254701602.

The spelling of 1361819317 in words is "one billion, three hundred sixty-one million, eight hundred nineteen thousand, three hundred seventeen".